Experiment Dataset on Gyro-remanent Magnetization Acquired by Marine Greigite-bearing Sediments of IODP U1433A Sample

DUAN Zongqi1,2LIU Qingsong3QIN Huafeng4ZHAO Xixi5GAO Xing6

1 Institute of Geographic Sciences and Natural Resources Research，Chinese Academy of Sciences，Beijing 100101，China2 The Geographical Society of China，Beijing 100101，China3 Department of Marine Science and Engineering，Southern University of Science and Technology，Shenzhen 518055，China4 State Key Laboratory of Lithospheric Evolution，Institute of Geology and Geophysics，Chinese Academy of Sciences，Beijing 100029，China5 State Key Laboratory of Marine Geology，Tongji University，Shanghai 200092，China6 State Key Laboratory of Resources and Environmental Information System，Institute of Geographic Sciences and Natural Resources Research，Chinese Academy of Sciences，Beijing 100101，China

DOI:10.3974/geodb.2019.06.05.V1

Published:Dec. 2019

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Key Words：

Greigite,gyro-remanent magnetization (GRM),anhysteretic remanent magnetization (ARM),saturation isothermal remanent magnetization (SIRM),rock magnetism

Abstract：

Rock magnetic analyses were conducted on marine greigite-bearing samples of Hole U1433A (12°55.1380′N, 115°2.8345′E）from IODP Expedition 349 to study the mechanism of gyro-remanent magnetization (GRM). Based on the ratio of dGRM and dNRM (dGRM/dNRM, above 0), the samples containing greigite were identified. Alternating field (AF) demagnetization on natural remanent magnetization (NRM), anhysteretic remanent magnetization (ARM), saturation isothermal remanent magnetization (SIRM) and measurement of thermal demagnetization (TD) of the GRM were carried out using a 2G Enterprises Rapid System. IRM acquisition, magnetic hysteresis loops and first-order reversal curves (FORC) diagrams were measured with a vibrating sample magnetometer Model VSM 3900 Magnetometer. Besides, comparative trial of the above measuring was applied between the samples in room temperature and the cooling samples after first heated to 400 degrees centigrade. Then the experiment dataset on gyro-remanent magnetization acquired by marine greigite-bearing sediments of Hole IODP U1433A was developed. The dataset was archived in .xlsx and .frc data formats. In which, the .xlsx format data files include: ①The ratio of dGRM and dNRM; ②The acquisition of GRM and its thermal demagnetization; ③AF demagnetization of samples cooling after first heated to 400 degree; ④The data of Bcr, Ms and GRM; ⑤IRM for samples in room temperature; ⑥ IRM for samples after first heated to 400 degrees centigrid; ⑦AF demagnetization on NRM, ARM and GRM of 12 samples in room temperature; the .frc format data files include FORCs for selected samples in room temperature, and for cooling samples after first heated to 400 degrees centigrade. The dataset is consisted of nine data files with data size of 4.02 MB (Compressed to one single data file with data size of 1.56 MB).

Foundation Item：

Ministry of Science and Technology of P. R. China (2016YFA0601903), National Natural Science Foundation of China (41506075, 41430962, 41674069 and 91528302), U.S. National Science Foundation grant (EAR-1250444), China Geological Survey (GZH201100202), and China Postdoctoral Science Foundation (2014M561047).

Data Citation：

DUAN Zongqi, LIU Qingsong, QIN Huafeng, ZHAO Xixi, GAO Xing.Experiment Dataset on Gyro-remanent Magnetization Acquired by Marine Greigite-bearing Sediments of IODP U1433A Sample[J/DB/OL]. Digital Journal of Global Change Data Repository, 2019. https://doi.org/10.3974/geodb.2019.06.05.V1.

Data Product: